package cn.itcast.n4_共享模型_管程;

import lombok.extern.slf4j.Slf4j;

/**
 * @program: juc
 * @description:
 * @author: flyduck
 * @create: 2024-09-11 08:59
 **/
@Slf4j(topic = "c.Test01_线程共享变量带来的问题_一个自增一个自减结果不为0")
public class Test01_线程共享变量带来的问题_一个自增一个自减结果不为0 {

    static int counter = 0;

    public static void main(String[] args) throws InterruptedException {
        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 5000; i++) {
                counter++;
            }
        },"t1");

        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 5000; i++) {
                counter--;
            }
        },"t2");

        t1.start();
        t2.start();
        t1.join();
        t2.join();
        log.debug("结果为:{}", counter);//-1201

    }
}
